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The MRCOOL DIY 5th Gen 18,000 BTU Tri Zone Ceiling Cassette Mini Split Heat Pump System is a smart and efficient solution for multi room climate control. Featuring three 6,000 BTU ceiling cassette indoor units, this system is ideal for managing comfort in three small to medium sized rooms independently. It includes MRCOOLs DIY friendly Quick Connect line sets, pre charged with R 454B refrigerant, allowing homeowners to install the system without special tools or professional assistance. With a high 23.9 SEER2 efficiency rating and quiet operation, this system offers year round comfort and modern convenience.
This tri zone system is ideal for homeowners who want individual control in three small rooms”such as bedrooms, home offices, or guest areas. The flush mounted ceiling cassette design keeps walls clear and allows for uniform air distribution. With smart technology, quiet operation, energy savings, and easy DIY installation, the MRCOOL 6 + 6 + 6 tri zone system is an excellent choice for multi room climate comfort. These bundles require the purchase of a Pre-Charged Line Set, these are not included.
The MRCOOL® DIY-MULTI3-18HP230D-O is a revolutionary 18,000 BTU 5th Generation 3 Zone Multi-Zone Mini-Split Condenser that brings you the power to customize comfort across multiple rooms with the convenience of DIY installation. Designed for compatibility with up to three separate indoor air handlers, this system delivers efficient and quiet operation for spaces of varying sizes.
The MRCOOL 18k DIY 3 Zone Condenser is the ideal solution for homeowners seeking zoned comfort without professional installation. Its energy efficiency, advanced features, and simple setup make it a standout choice for year-round indoor climate control.
The MRCOOL® DIY® Series 5th Generation OuttaSight® 6K BTU One-Way Ceiling Cassette is the perfect solution for discreet, efficient climate control in smaller spaces. Designed for homeowners who want to maintain comfort without sacrificing room aesthetics, this 230V cassette is ideal for compact applications that require powerful air distribution from above.
With its modern, ceiling-integrated design and simple DIY® installation, the MRCOOL® OuttaSight® 6K BTU One-Way Ceiling Cassette offers the perfect blend of style, functionality, and energy-saving comfort.
The MRCOOL DIY25-1438-O is a 25-foot pre-charged line set engineered for easy installation with MRCOOL DIY 6K, 9K, and 12K indoor units that utilize R-454B refrigerant. This lineset offers an efficient, mess-free solution for both homeowners and professionals who want a clean and secure HVAC connection without the need for vacuum pumps or refrigerant handling.
Equipped with Quick Connect fittings, this lineset simplifies the installation process by providing a tight, reliable seal—eliminating the need for special tools. The pre-charged refrigerant lines and durable insulation deliver excellent performance and energy efficiency in a wide range of settings.
Perfect for extending the installation distance or replacing an existing lineset, the DIY25-1438-O provides a flexible and user-friendly option for MRCOOL® mini-split systems. Its DIY design ensures users can achieve a professional-grade setup with minimal effort and maximum confidence.
The MRCOOL® DIY35-1438C-O is a 35-foot pre-charged lineset with an integrated DIY Pro Cable, engineered for compatibility with MRCOOL DIY 6K, 9K, and 12K indoor units using R-454B refrigerant. This advanced installation component simplifies setup while delivering excellent durability, refrigerant integrity, and safety.
Equipped with patented Quick Connect fittings, this lineset allows for a hassle-free, tool-free connection between indoor and outdoor units. The added DIY Pro Cable enhances reliability and safety during installation, offering pre-attached wiring in a single bundled solution. It's the ideal choice for extended installations requiring both performance and convenience.
The DIY35-1438C-O is the perfect solution for users seeking an extended lineset with built-in power and communication cabling. Its all-in-one design streamlines setup and supports reliable performance in MRCOOL® DIY mini-split systems.
The MRCOOL® DIY50-1438C-O is a 50-foot pre-charged lineset with an integrated DIY Pro Cable, designed for use with MRCOOL DIY 6K, 9K, and 12K indoor units using R-454B refrigerant. This extended-length lineset offers a convenient, all-in-one solution for efficient and reliable HVAC installations.
Featuring patented Quick Connect fittings, this lineset enables a quick and secure connection between indoor and outdoor units without specialized tools. The integrated DIY Pro Cable streamlines wiring and enhances installation safety, making it ideal for professional-quality DIY projects.
This 50-foot lineset with integrated Pro Cable is perfect for installations requiring longer reach and professional-grade convenience. It ensures reliable operation and an efficient setup for MRCOOL® DIY mini-split systems.
The MRCOOL® DIY16-3858-O is a 16-foot pre-charged lineset designed specifically for MRCOOL® DIY 24K and 36K indoor units using R-454B refrigerant. This lineset simplifies installation by eliminating the need for vacuum pumps or refrigerant charging, making it perfect for both DIY enthusiasts and professionals.
Featuring Quick Connect® fittings, this lineset allows for quick, secure, and tool-free connections between indoor and outdoor units. The high-quality insulation and durable copper tubing ensure optimal thermal performance and long-lasting reliability.
This lineset offers a reliable and efficient solution for extending or replacing refrigerant lines in MRCOOL® DIY mini-split systems, ensuring hassle-free installation and optimal system performance.
18,000 BTU MRCOOL DIY 5th Generation 3 Zone Multi-Zone Mini Split Condenser - R410A | 230V | |
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SKU | DIY-MULTI3-18HP230D-O |
Weight (in lbs) | 101.630000 |
Brand/Manufacturer | MRCOOL |
HSPF2 | 10 |
Cooling BTU | 18,000 |
Heating BTU | 18,000 |
Decibel Level (dBA) | 60 |
Refrigerant | R454B |
SEER2 (Efficiency) | 23.9 |
Compressor Type | Rotary |
Liquid Line | 1/4 |
Suction Line | 3/8 |
Liquid Valve Size | 1/4 |
Suction Valve Size | 3/8 |
Electrical | 208/230 |
Max Breaker Size | 20 |
Min. Breaker Size | 16 |
BTU/Tonnage | 18,000 BTU/1.5 Ton |
Zone Compatibility | Multi Zone |
Height | 26.5 |
Width | 35.04 |
Depth | 13.46 |
Warranty | 7 Year Compressor/5 Year Parts Warranty |
Resources | You will need Adobe Acrobat Reader to view PDF documents. |
Safety Information | PROPOSITION 65 WARNING
This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here.
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6,000 BTU MRCOOL DIY 5th Generation OuttaSight Single Zone One-Way Ceiling Cassette Mini Split Air Handler - R410A | 230V | |
SKU | DIYCASSETTE06HP-230D25-O |
Weight (in lbs) | 45.000000 |
Brand/Manufacturer | MRCOOL |
Decibel Level (dBA) | 35.5 |
Refrigerant | R454B |
Liquid Valve Size | 1/4 |
Suction Valve Size | 3/8 |
Mini Split Type | Ceiling Cassette |
Zone Compatibility | Multi Zone |
Indoor Units | 15 + 15 + 18 |
Height | 8.98 |
Width | 50.31 |
Depth | 13.19 |
Warranty | 5-Year Part/7-Year Compressor |
Resources | " You will need Adobe® Acrobat® Reader to view PDF documents." |
Safety Information | PROPOSITION 65 WARNING
This product and many products on our site may contain a chemical know to the state of California to cause cancer or birth defects or other reproductive harm. For more information about Proposition 65 please Click Here.
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25ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor - R454B | |
SKU | DIY25-1438-O |
Weight (in lbs) | 10.400000 |
Brand/Manufacturer | MRCOOL |
Refrigerant | R454B |
Liquid Valve Size | 1/4 |
Suction Valve Size | 3/8 |
Indoor Units | 15 + 15 + 18 |
Safety Information | |
35ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B | |
SKU | DIY35-1438C-O |
Weight (in lbs) | 17.600000 |
Brand/Manufacturer | MRCOOL |
Refrigerant | R454B |
Liquid Valve Size | 1/4 |
Suction Valve Size | 3/8 |
Indoor Units | 15 + 15 + 18 |
Safety Information | |
50ft 1/4 x 3/8 Line Set for DIY 6K, 9K & 12K Indoor w/ DIY Pro Cable - R454B | |
SKU | DIY50-1438C-O |
Weight (in lbs) | 24.000000 |
Brand/Manufacturer | MRCOOL |
Refrigerant | R454B |
Liquid Valve Size | 1/4 |
Suction Valve Size | 3/8 |
Indoor Units | 15 + 15 + 18 |
Safety Information | |
16ft 3/8 x 5/8 Line Set for DIY 24K & 36K Indoor - R454B | |
SKU | DIY16-3858-O |
Weight (in lbs) | 15.900000 |
Brand/Manufacturer | MRCOOL |
Refrigerant | R454B |
Liquid Line | 3/8" |
Suction Line | 5/8" |
Liquid Valve Size | 3/8 |
Suction Valve Size | 5/8 |
Electrical | 230 V. 1 Phase 60 Hz |
Mini Split Type | Wall Mounted |
Warranty | 5-year Parts / 7-year Compressor |
Resources | You will need Adobe® Acrobat® Reader to view PDF documents. |
Safety Information |
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